Definition of obviative in US English:

obviative

noun

Linguistics
  • A grammatical marker or category in the Algonquian family of North American Indian languages for a third person other than the principal (or proximate) third person in a given context.

adjective

Linguistics
  • Of, relating to, or designating the obviative; belonging to the category of, or marked by, the obviative.

Origin

Late 19th century; earliest use found in Transactions of the American Philological Association. From French obviatif from classical Latin obviāt-, past participial stem of obviāre + French -if.